# Chapter 9 - Review Exercises - Page 750: 30

$3$

#### Work Step by Step

Note that $64=4^3$. Write $64$ as $4^3$ to obtain: $=\log_4{(4^3)}$ Use the rule "$\log_b{(b^x)}=x$" to obtain: $\log_4{(4^3)} = 3$

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